SnoBird is a travel and navigation app developed by Galon, John Insurance Services Ltd. for iPhone users. The app provides a simple and convenient way to track the number of days spent in the United States based on a calendar year, rolling 365-day period, and substantial presence test.

Apart from tracking the number of days, SnoBird also helps users maintain identification records and track purchases made in the United States. The app also comes with a built-in reminder feature that alerts users to obtain travel insurance, cell phone data packages, and renew identification documents.

With SnoBird, iPhone users can easily keep track of their time spent in the US and stay on top of their travel plans.